1*P0135 Primary Heated Oxygen Sensor (Primary HO2S) (Sensor 1) Heater Circuit Malfunction code 1
2*P0141 Secondary Heated Oxygen Sensor (Secondary HO2S) (Sensor 2) Heater Circuit Malfunction code 2

3*P1337 Engine Speed (RPM) Fluctuation Sensor No Signal

4*P1508 Idle Air Control Valve (IACV) Circuit Malfunction
p0450 code 14

5*p0450????

1&2- i pretty i can easliy fix this but getting 2 new sensors and a cat
3- no clue at all
4- i have no clue bc my idle is great 500-1000rpm
5- cant find it

any tips or pointers would be great!

 

bump

 

you fix the code 4 by just cleanin the idle control valve. thats ll i had to do to mine

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hookedonvtec &raquo;</TD></TR><TR><TD CLASS="quote">you fix the code 4 by just cleanin the idle control valve. thats ll i had to do to mine</TD></TR></TABLE> with parts cleaner?

 

for #4 the IACV clean it out with carb cleaner. same thing happened to me and it worked great. Also it is usually located on the back of the intake manifold and has 2 or 3 bolts and to coolant lines going to it.